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  4. Use of combination of coagulation and adsorption process for the landfill leachate treatment from Casablanca city
 
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Use of combination of coagulation and adsorption process for the landfill leachate treatment from Casablanca city
Dr. Valdés-Morales, Héctor 
Facultad de Ingeniería 
Chaouki, Zineb
Khalil, Fouad
Ijjaali, Mustapha
Rafqah, Salah
Sarakha, Mohamed
Zaitan, Hicham
10.5004/dwt.2017.20743
Elsevier
2017
This article presents a combination of coagulation–flocculation and powder activated carbon (PAC) adsorption as a treatment process for landfill leachate. Leachates were collected from a municipal solid waste landfill in Mediouna site, Casablanca city. Ferric chloride (FeCl3) is used here as a coagulant to study the optimum conditions for the removal of chemical oxygen demand (COD), colour, total suspended solids (TSS) and turbidity in jar tests. This coagulant showed the highest removal efficiency in terms of COD (62.5%), turbidity (92.5%), colour (80%) and least sludge volume generation (30% v/v) for an optimum coagulant dose of 12 g Fe3+ L–1. Combining coagulation with adsorption process onto PAC enhances the removal of COD, turbidity and colour reduction by a 77%, a 99% and a 99.7%, respectively. These results show that coagulation-adsorption could be used as a promising hybrid process for the treatment of landfill leachates.
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Coagulation
Flocculation
Adsorption
Jar-Test
Landfill leachate
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